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Subject: Re: Tal - Hjartarson, Reykjavik 1986

Author: Stan Arts

Date: 07:18:07 10/25/03

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On October 25, 2003 at 09:11:36, Darren Rushton wrote:

>[D]r3n3/3b2kp/1qNp2p1/1p1Pp2n/1P2Pp2/3B1N1P/1Q3PP1/2R3K1 w - - 0 36
>
>
>36.Rc5!!
>
>What does your program say?

Hi

Neurosis1.4 (next version) on my slow PIII-550 with 24 MB hash.

It finds Rc5 a few times, on 6th and 8th ply, but thinks N6xe5 is best
after 30 minutes of thinking, and gives white a small advantage.

Legal moves: 46
Ply Score Time     Nodes      Best move and expected line
------------------------------------------------------------
2   15    5        1314       Kh1 Kg8
3   16    11       2314       Kh1 Kg8 Qb3
3   17    16       5460       Qe2 < + > Nc7 Qb2
3   17    16       5512       Qe2 Nc7 Qb2
4   8     22       9730       Qe2 Nc7 Qb2 Kg8
4   9     27       13036      Kh1 < + > Kg8 Qb3
4   14    38       18542      Kh1 Rc8 Qc2 Kg8
4   15    49       24459      Qc3 < + > Kg8 Ne7+ Kh8
4   15    49       25808      Qc3 Kg8 Ne7+ Kh8 Nc6
5   8     137      78077      Qc3 Kh8 Ng5 Nh5-f6 Ne6
5   9     143      82355      Qe2 < + > Nc7 Qb2 Kg8
5   17    176      99305      Qe2 Nc7 Qc2 Rc8 Qb2
6   9     511      316105     Qe2 Nc7 Qb2 Kg8 Ne7+ Kh8
6   10    955      604800     Rc5 < + > dxc5 Nf3xe5 Nh5-f6
6   19    1131     726269     Rc5 Qa6 Rc1 Kg8 Ne7+ Kh8 Nc6 Nc7
7   23    1862     1196287    Rc5 Bxc6 Rxc6 Qb8 Qe2 Ra1+ Kh2 Ra4
7   24    2362     1563792    Nf3xe5 < + > dxe5 Nxe5 Bxh3
7   82    2702     1836832    Nf3xe5 dxe5 Nxe5 Qf6 Rb1 Ra7 Nxd7
7   83    2911     1989465    Nc6xe5 < + > Kg8 Nxd7 Ra7
7   85    3185     2185060    Nc6xe5 dxe5 Nxe5 Qf6 Rc2 Rd8 Nxd7
8   45    4608     3129638    Nc6xe5 < - > dxe5 Nxe5 Qf6
8   -29   5036     3415517    Nc6xe5 dxe5 Nxe5 Qf6 Rc2 Rd8 Be2 Kh6
8   -28   5712     3895142    Rc5 < + > Bxc6 Rxc6 Qb8
8   22    7041     4799328    Rc5 Bxc6 Rxc6 Qb8 Qe2 Ne8-f6 Rc1 Ra4
9   16    22206    14840312   Rc5 Qa6 Rc1 Ne8-f6 Qe2 Qa2 Qe1 Qa4 Qc3
9   17    22898    15326889   Nc6xe5 < + > dxe5 Nxe5 Ne8-f6
9   76    25189    17005755   Nc6xe5 dxe5 Nxe5 Qf6 Rc5 Kg8 Qc3 Rd8 Nxd7
10  70    57902    40505763   Nc6xe5 dxe5 Nxe5 Qf6 Rb1 Ra7 Nxd7 Qxb2 Rxb2 Rxd7
Total nodes:114810696 n/sec:61894  (Q-nodes:43359365 max depth:23)

Stan




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